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Changed how boundary strings are generated. This new way uses 28 dashes 

and 12 following hexadecimal letters, which seems to be what IE uses.
This makes curl work smoother with more stupidly written server apps.

Worked this out together with Martijn Broenland.
This commit is contained in:
Daniel Stenberg 2003-04-04 12:24:01 +00:00
parent 0821447b5b
commit 61788a0389
1 changed files with 11 additions and 13 deletions
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24
lib/formdata.c
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@ -128,11 +128,8 @@ Content-Disposition: form-data; name="FILECONTENT"
#include "memdebug.h"
#endif
/* Length of the random boundary string. The risk of this being used
in binary data is very close to zero, 64^32 makes
6277101735386680763835789423207666416102355444464034512896
combinations... */
#define BOUNDARY_LENGTH 32
/* Length of the random boundary string. */
#define BOUNDARY_LENGTH 40
/* What kind of Content-Type to use on un-specified files with unrecognized
extensions. */
@ -1049,22 +1046,23 @@ char *Curl_FormBoundary(void)
the same form won't be identical */
int i;
static char table62[]=
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
static char table16[]="abcdef0123456789";
retstring = (char *)malloc(BOUNDARY_LENGTH);
retstring = (char *)malloc(BOUNDARY_LENGTH+1);
if(!retstring)
return NULL; /* failed */
srand(time(NULL)+randomizer++); /* seed */
strcpy(retstring, "curl"); /* bonus commercials 8*) */
strcpy(retstring, "----------------------------");
for(i=4; i<(BOUNDARY_LENGTH-1); i++) {
retstring[i] = table62[rand()%62];
}
retstring[BOUNDARY_LENGTH-1]=0; /* zero terminate */
for(i=strlen(retstring); i<BOUNDARY_LENGTH; i++)
retstring[i] = table16[rand()%16];
/* 28 dashes and 12 hexadecimal digits makes 12^16 (184884258895036416)
combinations */
retstring[BOUNDARY_LENGTH]=0; /* zero terminate */
return retstring;
}